Find flights
Deals
When to book
FAQs

Cheap flights from Chiang Mai to Ko Samui from £139

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
3 Jul — 10 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Mai to Ko Samui
Explore the most affordable flight options available from Chiang Mai to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 June 2026.

Thu 2/708:00
CNX
-
USM
1 stop13h 35m
Multiple Airlines
Tue 7/707:50
USM
-
CNX
1 stop14h 10m
Multiple Airlines
Deal found 31/5£235
Tue 9/610:10
CNX
-
USM
1 stop6h 40m
Bangkok Airways
Tue 16/608:55
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 2/6£240
Thu 11/611:55
CNX
-
USM
1 stop5h 10m
Bangkok Airways
Sun 14/608:55
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 31/5£244
Fri 12/615:55
CNX
-
USM
1 stop5h 40m
Multiple Airlines
Tue 16/608:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 1/6£248
Sat 6/610:55
CNX
-
USM
1 stop7h 05m
Multiple Airlines
Sat 13/608:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 1/6£253
Fri 12/615:55
CNX
-
USM
1 stop5h 40m
Multiple Airlines
Sun 14/608:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 30/5£258
Tue 9/606:35
CNX
-
USM
1 stop14h 15m
Multiple Airlines
Tue 16/606:55
USM
-
CNX
1 stop13h 55m
Multiple Airlines
Deal found 2/6£258
Thu 2/721:05
CNX
-
USM
2 stops22h 10m
Multiple Airlines
Sat 4/708:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 2/6£259
Sun 29/1106:30
CNX
-
USM
1 stop3h 55m
Multiple Airlines
Thu 3/1207:00
USM
-
CNX
1 stop4h 20m
Multiple Airlines
Deal found 31/5£264
Tue 23/620:00
CNX
-
USM
1 stop11h 10m
Bangkok Airways
Thu 2/708:55
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 30/5£269

Find flight deals from Chiang Mai to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 June 2026.

Round-trip from

£235

One-way from

£139

Popular in

December

Cheapest in

September

Average price

£221

Good one-way deal

£187 or less
2/7-7/7
  • 2/7-7/7
  • 2 total stops
  • 27h 45m total
  • Chiang Mai to Ko Samui
Search Deals
10/6
  • 10/6
  • 1 total stop
  • 5h 40m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£24 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a one-way flight from Chiang Mai to Ko Samui.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Mai to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 June 2026.
Use the filters below to find and compare flights from Chiang Mai to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 29/11

06:30-10:25

1 stop3h 55m

Ko Samui

Thu 3/12

07:00-11:20

1 stop4h 20m

£264

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 7/7

22:30-19:15

2 stops20h 45m

Ko Samui

Thu 9/7

08:55-10:40

Nonstop1h 45m

£281
Fastest return journey

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 30/6

15:55-21:35

1 stop5h 40m

Ko Samui

Tue 7/7

08:55-10:40

Nonstop1h 45m

£286

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 17/6

08:25-19:45

1 stop11h 20m

Ko Samui

Wed 1/7

08:55-10:40

Nonstop1h 45m

£299

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 20/6

21:10-08:15

1 stop11h 05m

Ko Samui

Thu 2/7

08:55-10:40

Nonstop1h 45m

£309

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 28/6

07:00-19:45

1 stop12h 45m

Ko Samui

Sun 5/7

06:55-11:25

1 stop4h 30m

£311

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 22/6

20:00-16:35

1 stop20h 35m

Ko Samui

Fri 3/7

08:55-10:40

Nonstop1h 45m

£320

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 22/6

20:00-17:05

1 stop21h 05m

Ko Samui

Thu 2/7

08:55-10:40

Nonstop1h 45m

£320

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 24/11

19:45-07:45

1 stop12h 00m

Ko Samui

Sat 26/12

07:00-09:25

1 stop26h 25m

£333
Cheapest one-way

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 18/6

07:00-18:30

1 stop11h 30m

£139

Flights are sorted by cheapest return flights first.

Deals found on 29/5

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Chiang Mai to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Chiang Mai with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to Ko Samui

What is the cheapest month to book a flight from Chiang Mai to Ko Samui?

Currently, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of £208). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of £431). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CNX to USM?

Find hourly flight availability from Chiang Mai to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chiang Mai to Ko Samui as you normally would.

How much does it cost for a return flight from Chiang Mai to Ko Samui?

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Chiang Mai to Ko Samui flight route?

    Flights from Chiang Mai to Ko Samui have been viewed 8 times in the past calendar month.

  • What are the most reliable airlines from Chiang Mai to Ko Samui?

    No one likes to see their flight delayed. When booking a flight from Chiang Mai to Ko Samui consider choosing EVA Air (95%), Thai Airways (95%) or Etihad Airways (95%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chiang Mai to Ko Samui?

    Looking for the cheapest flight from Chiang Mai to Ko Samui? While on average our users pay £193, our data indicates the cheapest price to be £151. The most popular route (Chiang Mai - Ko Samui), is priced around £366.

  • Can I find deals for flights from Chiang Mai to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Chiang Mai to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chiang Mai to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Ko Samui.

  • Can I find deals for business class flights from Chiang Mai to Ko Samui?

    Yes. Cheapflights offers flight deals from Chiang Mai to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chiang Mai to Ko Samui?

    Currently, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of £208). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of £431). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao
Khanom

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chiang Mai to Ko Samui?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ko Samui from Chiang Mai today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Ko Samui?

Cheapflights helps you find that perfect flight to Ko Samui from Chiang Mai by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Chiang Mai to Ko Samui with no change fees?

Need flexible booking options for your flight to Ko Samui from Chiang Mai? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Chiang Mai to Ko Samui become cheaper?

Yes, Cheapflights offers price alerts on Chiang Mai to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.